Finding the Fourth Proportional to 76,987.44, 115,479.95 and 63,811.98
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Solution
The fourth proportional to 76,987.44, 115,479.95 and 63,811.98 is: 95,716.96
Step by Step Solution
- Step 1: Write the proportion equation
76,987.44 : 115,479.95 = 63,811.98 : x - Step 2: Convert to fraction form
76,987.44/115,479.95 = 63,811.98/x - Step 3: Cross multiply
76,987.44x = 115,479.95 × 63,811.98 - Step 4: Simplify right side
76,987.44x = 7,369,003,940.74 - Step 5: Solve for x
x = 7,369,003,940.74/76,987.44 - Step 6: Final answer
x = 95,716.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.